Discounts at Co-op very much varies by store. One former staff member told Martin Lewis items which expire that day tend to have a 50% discount and reductions increase around 5pm, though another MoneySaver said you have to wait until 8pm for 75% discounts.

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M&S shoppers have revealed how they've seen final reductions at 6.30pm in stores which close at 7pm, and at 8pm in stores closing at 9pm. One person revealed that M&S often marks down items reaching their sell-by date "just after lunch".

Shoppers said reductions tend to start late morning or lunchtime. Morrisons told m oneysavingexpert there's no set policy though and it's up to individual store managers to decide when and how to reduce items.

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Tesco

Tesco

Tesco also insists there's no hard and fast rule on discounts, according to Moneysavingexpert. Previous reports from shop-floor staff suggest reductions start as early as 8am and big discounts materialise early evening – but much will depend on individual stores' opening times.